Carbureter.



W. E. NAGEBORN.

GABBURETER.

APPLIOATION FILED MAY3, 1909.

1,018,126, I Patented Feb. 20, 1912.

Fig. 3..

Sinuminr ;rno,

WILLIAM E. NAGEBORN, 013 DETROIT, MICHIGAN.

CARBURETER.

Specification of Letters Patent.

Application filed May 3, 1909. Serial No. 493,552.

ToalZ whom it may concern:

Be it known that I, IVILLIAM E. NAGEBORN, a citizen of the United States, residing-at Detroit, county of Wayne, State of Michlgan, have invented a certain new and useful Improvement in Carbureters, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to carbureters for internal combustion engines and consists in the improvements hereinafter describedand pointed out in the claims.

In the accompanying drawing,Figure 1 is a vertical central section of a device em-' bodying my invention. Fig. 2 is a section in the plane indicated by the line 22, Fig. 1. Fig. 3 is an enlarged detail sectionshowing the ball-valve, also in section. Fig. 4 is a plan view of the plug P.

A, A indicates the casing of the carbureter as a whole.

B is the passage which communicates with the intake passage of the engine.-

C is the intake passage for air.

D indicates the gasolene reservoir.

E is a float in the reservoir D, connected to a lever F, which lever pivoted at f and extends beyond said pivot.

G is a reciprocating rod adapted to be guided in an aperture through a projection g which extends from the wall of the reser voir D. The rod G rests toward its lower end upon the arm of the lever F opposite that to which the float E is attached.

L is an aperture leading into the reservoir D and having a valve seat around its outer end which may be closed by a ballvalve H.

I is a chamber a little larger than the ball-valve H, 'gains t the lower end of which said ball-valve rests. y

K is the intake pipe for gasolene.

7c is a smallaperture forming a communication between the chamber I and the pipe K.

J is a screw-threaded plug, the threads of which take into the threads in the wall surrounding the upper end of the chamber I.

j is a stem extending downward from the center of the plug J- to a position adjacent to the ball-valve H. The lift of the ball-valve H may be regulated by screwing the plug J up or down. It will be observed that While the ball-valve H nearly. fills the chamber I that the passage 70 is quite small and that the chamber I is full of fluid. Thus a sudden. movement of the ball H, as for instance by the jarring of a vehicle, is prevented.

lVhen the fluid in the reservoir D has attained its normal level, the float E has raised up until the upper end of therod Gr, supported by the lever F, is just below the ballvalve H, so that the said ball-valve prevents the further inflow of fluid. When the level of the liquid in the reservoir D has fallen slightly, the float E will fall with it and the rod G will force the ball H from its seat, permitting fluid to run in from the chamber I to restore the normal level of the fluid in the reservoir D. I have found that this arrangement maintains the normal level of the fluid in the reservoir D more constant than the form in which the valve is forced to its seat by the buoyancy of the Boat, inasmuch as in'the latter form of the device, the valve will not become tight until a considerable and somewhat variable pressure has been brought on it, which involves a varia- Patented Feb. 20, 1912.

tion in the level to which the liquid rises in the reservoir. In the form here shown, it will be observed that the rising of the fluid level in the reservoir D simply removes the obstruction from the path of the inlet valve and permits it to close by gravity.

M is'a valve interposed between the-passages B and C and upon the opposite side of the delivery spout R to that of the throttle valve 0. I form this valve in the usual way, except that I provide a washer m, of a composition of water glass and asbestos, which composition is not injured by heating, deadens the noise of the valve, and closes tight upon its seat.

R is the delivery spout from which gasolene or combustible fluid is sprayed into the intake passage B. The spout R is gov,- erned by a needle valve S (Fig. 2) and communicates with a chamber "rformed in this lHStElIlJG in the Wall of the reservoir and having its lower end extending below the level of the liquid in said reservoir.

9 1s a small passage forming a commun1- cation between reservoir D and the chamber 1', and having a valve seat around its upper the .Yalve seat surrounding the" end of the p is a rod extending-downward from the center of the plug P.

s, a are apertures formed through the plus;

a f, 3) is a cavitytormed in the ball.- valve-Qg, into which cavity the form a guide for the ball-valve Qt. By screwingthe plug P up or down, the lower. end of the rod p is brought farther from, or nearer. to, the bottom of the cavity '1,

thus limiting the extent of travel of the} ball-valve U is a throttle valvedocated inthe pa..- sage B between the delivery-nozzle R and the engine, and c is a handle bywhich the valve 51 may be manipulated.

l'l is a screw cap: closing an aperture through which the valve M maybe introduced, 1

dis a screw passing through the cap ll and adapted to be adjusted. up and. down limit the motion of thevalve M, loyinterposing its lower end in the path of travel of a pro eCtion from said valve.

l term the casing A, A 'in two parts which are united on surfaces in the plane of the line a, a. (Fig.1.) These parts are united by lag screws and they may be separated to permit access to the plug P which may be adjusted by a. screw-driver engaging in the usual slot in the head of the plug 255, as indicated in Fig, l.

By the above described arrangement, the throttle prevents a dirbct draft on the deli v nozzle, and the vacuum "may be regua by adjusting the liftof the valve M and the delivery is ariected by the resistance that the valve ill-otters to being raised from its seat.

(in the suction stroke of the engine the whole chamber 9* becomes filled with oil up to the top of the nozzle, and the ball Q rises as far as permitted by rod 79. ()n the cessa ,tion or the suction the oil in chamber 7* begins to flow back to the oil float chamber, and the ball Q willretnrn to the seat. The amount of all which will return from cham-' ber r to thetloat chamber is that below ball (,2. llssoon as ball Q seats it traps a certain amount of oil in a and the amount so trapped varies with the ustment oi rod 79, Giving to the relative dlameters of chamber a and lower end ofthe rod 32 progects, so thatsaid rod shall the nozzle duct a small diderence of level of tra ped oil in chamber 0* would make a large difterence in the level in the nozzle duct. Therefore an adjustment of rod p will effect considerable ditference in the time which will elapse between the beginning of suction and that when oil begins to flow.

1. In a carburetor, a reservoir, a chamber r, a passage communicating with said reservoir and chamber, a valve in said chamber adapted to close one end of said passage and having a cavity formed therein, said chamher being provided with screw-threads in its walls, a'pert'orated screw-threaded plug engaging said threads, a rod extending from said plug into the cavity in the ball-valve, substantially as and for the purpose described.

2, In a carburetor, a reservoir, a chamber 7', a passage communicating with said reservoir'and chamber, a valve in said chamber adapted to close one end of said passage and having; a cavity formed therein, said chamber being provided with screw-threads in its walls toward its upper end, a perforated screw-threaded plug engaging said threads, a rod eirtending from said plug into the cavity in the ball-valve, a part of said carbureter being removably secured to said reservoir the plane of the upper end of said chamber.

8. In a carbureter, a reservoir, a chamber 1, a passage communicating with said reservoir and chamber, a valve in said chamber adapted to close one end of said passage, said chamber being; provided with screwthreads in its walls, a perforated screwthreaded plug engaging said threads, said plug being adapted to limit the movement of said valve, substantially as and for the purpose described.

r 4. In a carbureter, a reservoir, a chamber r, a passage communicating with said reservein and chamber, a valve in said chamber adapted to close one end of said passage, said chamber being provided with screwthreads in its walls toward its upper end, a perforated screw-threaded plug engaging said threads, a rod extending from said plug to a position adjacent to said valve, a part of said carbureter being removably secured to said reservoir at the plane of the upper end of said chamber, for the purpose described.

In testimony whereof, I sign this specification in the presence of two witnesses.

WILLIAM E. NAGEBORN. ll itnesses VIRGINIA, C.- SPRATT, ELLIo'rr J. S'ronnann. 

